| abstract |
A medical rubber part according to the present invention comprises a rubber composition including at least one type of rubber component, selected from the group consisting of butyl rubbers and halogenated butyl rubbers, and not less than 3 parts by mass and not more than 50 parts by mass, with respect to 100 parts by mass of the total amount of the rubber component, of silica with a BET specific surface area of not less than 1m 2 /g and not more than 60m 2 /g and a bulk specific gravity of not less than 30g/liter and not more than 130g/liter. |